Ments



(Nomdel') E. J. O'KEEPB.

' LOCK. No. 414,720. Patented Nov. l2, 1889.

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UNITED STATES EDVARD .L OKEEFE, OF NE\V YORK, N. Y., ASSIGNOR,

PATENT OFFICE.

BY MESNE ASSIGN- MENTS, To r. a F. coni-niv, or NEW BRITAIN,conNECTIGrnr.`

LOCK.

SPECIFICATION forming part of Letters Patent No. 414,720, .latedNovember 12, 1889.

Application and January 1s, 1889. seria No. 296,692. oa moda.)

each, and necessitatingthe providing of keys for the tenants, as Well asfor the janitor or persons cleaning the various apartments or havinggeneral inspection of them.

By means of my invention the separate rooms of a hotel or other buildingmay be provided with the locks, and the tenants each supplied with a keywhich will open the doors of their respective apartments, but which Wiilnot serve to unlock the doors of the adjoining apartments, and theporter or janitor supplied with a single key by Whichall of the locks ofthe building may be opened, the j anitor thus with one key being enabledto enter any of the rooms, While the tenants, holding` diierent keys,may also be enabled to enter their own respectiveapartments.

The invention will be more fully understood from the detaileddescription hereinafter presented, reference being .had to theaccompanying drawings, in which# Figure I is a view of a detachedportion of a door employing the lock, the lock and door being partly insection on the dotted line X X of Fig. 3. Fig. 2 is a central verticalsection through the lock on the dotted line Y Y of Fig. l, the parts ofthe lockbeing illustrated in; the position they are caused to assume bythe ,insertion of one of the keys, which, for 45 convenience, may bestyled the minor or tenantsI key. Fig. 3 is a like view of the lock withits parts illustrated in the position they lare caused to assume by theintroductionfoffa different key, styled the major a large number ofrooms, having tenants for or janitors key. Fig. @L is a face view of the5o minor key. Fig. 5 is a like view of the major key, and Fig. 6 a faceview of the inner end of the escutcheon-cylinder.

In the drawings, A designates the door, which will be supplied with theusual knobspindle B and spring-latch bolt C, these elements forming nopart of the present invention.

The escutcheon-cylinder is designated by the letter D, and has athreaded exterior, by 6o Which it is secured in position in an apertureformed in the door A and corresponding with an aperture formed in thelock-casing E, said cylinder being retained in said apertures by meansof its threaded exterior in connection with the locking-rod F,(illustrated in Fig. 1,) said rod being adapted to be driven against thethreaded cylinder by means of the screw G, the head of which is exposedat the edge of the door, the rod F alsoforming no part ot 7o the presentinvent-ion.

The escutcheon-cylinder D contains the cylinder H and cylinder I, oneclosely fitting the other and the Whole inclosed by the cylinder D.

In the cylinderD are formed the series of chambers J, containing springsK and drivers L, adapted, through the action of the springs K, todepress the pins lettered M N, respectively, which move in chambers orapertures 8o dformed in the cylinders H I, as illustrated in Figs. 2 and3. The outer edge of the cylinder H has a shoulder O seated in anannular recess in the adjoining edges of the cylinder D, and thecylinder I has at its outer edge a shoulder P seated in acorrespondinglyformed recess in the inner edges of the cylinder II, thepurpose of the shoulders O P being to insure the due rotation of thecylinders H I when actuated by the'keys. The 9o cylinder I contains aslot Q for the reception of either the minor key R or the major key S.The inner edge of said cylinder I is provided with an annular groove T,which rotates against the locking-plate Y, the edge of said plateresting in said groove and serving to prevent the cylinder I from beingdrawn outward from the lock. The inner central portion of the cylinder Iis provided with a recess to receive the inner end of the rod W, whichcarries a ward a ot' a size adapted to enter the slot Q, in whichposition it is illust-rated in Figs. 2 and 3. The rod W extends throughthe lock-casing from the inner side ofthe door, where it is providedwith a hub b and shoulder CZ. The outer portion of the rod W is inclosedby the casing c, in which a chamber f is provided to receive the springg between `a shoulder formed in it and the collar d, as illustratedv inFig. 2. The collar cl is retained on the rod `W by means ot' the sleevei and set-screw j. The rod XV Within the locking-casing passes throughAthe revoluble plate k, which contains a central aperture fitting thesurface of the rod WV and a slot m, corresponding with the slot in theinner end of the cylinder I to receive the ward a. The revoluble platela carries the arm n, and is provided with an annular groove p, ttingand having a movement upon the edges q ofthe lock-casing, as illustratedin Figs. 2 and 3. l The rod W may have a horizontal movement through theplate k without rotating it, the plate being prevented from having anybut a rotary movement by means of its annular groove p and the edges qof the lock-casing. Vhen the rod W is caused to rotate either by theoperation of turning the cylinder I by means ot' the key or by pressureapplied to the head b, the Ward a on said rod will engage the slot m inthe plate 7c and cause said plate to have a rotary ino-vement, .wherebythe arm n is broughtinto contact with the tumbler r, elevating it, andthen against the walls of the recess s, formed in the bolt t, asillustrated by dotted lines in Fig. l, the purpose of the arm n duringthis movement being to rst free .the bolt t by elevating the tumblerr,and then to either project the said bolt into the usual nosing orretract it into the. lock-casing. The bolt t will be supported andguided in its movement by the face-plate w and the pin a', arranged inthe elongated slot y. (Illustrated by dotted lines in Fig. l.)

When desiring to open the lock from the^ inner side of the door, it willbe necessary to draw the'head b outward from the door, therebycompressing the spring g in the chamber f and withdrawing the inner endof the ward a from the slot Q in the cylinder I, thus leaving said Wardfully engaging the slot on in the revoluble plate k, whereupon byturning the head b the arm a is caused to move upward, elevating thetumbler 0^ and retracting the bolt t into its casing. Then the rod WV isWithdrawn from the cylinder I, by drawing on the head b the plate 7a,with its arln n, may be caused to fully lock or unlock the door by therotation of the head b, which, as aforesaid, is on the inner side of thedoor.

The operation of the cylinders H I, in connection with the drivers L andpins M N, will be rendered apparent from an inspection of Figs. 2 and 3.

The pin-chambers in the cylin- A ders lettered I-I I, respectively,being in line with the uchambers J in the cylinder D, the

springs K, operating through the drivers L,`

der D, as shown in Fig. 2, thereby permitting of the rotation of thecylinders by the means of the key R, the cylinders H I at this timebeing connected. by the irregular line of meeting edges between the pinsM lN. Upon the rotation of the cylinders H I, under the -condition ofthe pins illustrated in Fig. 2, the walls of the inner end of the slot Qwill engage the sides of the ward a and cause the rod W to rotate,thereby bringing the arm n of the revoluble plate k upward into contactwith the tumbler -r `and bolt t and lactuating said bolt either to lockor unlock the' door. The pins INI N. upon the withdrawal of the key RWill assume their normal positions with respect to each other. The keyR, being the minor key, Will be supplied to the tenants, and while itwill unlock the door prepared for it, it will be ineffective on any ofthe other doors of the building, said other doors-having locks in whichthe pins M N will vary in length.

When it vis desired to unlock the door for the purpose of inspecting orcleaning the room, the janitor will use the major key S, which, uponbeing introduced intothe slot Q,

will cause the pins M N to have aregular line of union between thecyli-nders H I, While the upper ends of the pins M will connect thecylinder H with the cylinder D in an immovable manner, as illustratedinFig. 3, in which condition, upon vturning the key S, the cylinder Iwill rotate and cause the locking or unlocking of the door through themedium of the rod'NV, ward-a, and arm non the revoluble plate k'. doormay be opened by either the key R or the'key S from the outer side ofthe door, or by the rod W from the inner side of the door, the keys R Sline.

The combinations formed by the pins M N will vary to snit the'dierentminor or tenants keys R throughout the various apartments of thebuilding; but all of these combinations will be arranged with respect tothe outline of the major key S, which may be utilized for unlocking allof the apartments of the building. It will only be necessary, therefore,for the proprietor orjanitor to carry one keyS for access to all of theapartments, while the various tenants will each be supplied with adifferent key.

That I claim as my invention, and desire to secure by LettersPatent,is--

l. In a lock, the combination of a rotary key-hub and a rotary cylindersurrounding being entirely d'iii'erent in out- IIO It will thus be seenthat the it, said cylinder having tumbler-recesses, substantially as andfor the purposes set forth.

2. In a look, the combination of a key-huh,

a cylinder surrounding it, and turnhlers to fasten the two together orto unfasten them,

so that they may be rotated together'or't e key-hub rotated alone,substantially as set forth.

In a lock, the combination, with a keyhuh and a surrounding cylinder, oftumhlers consisting of three parts arranged to he formed 'in twocombinations, so as to permit the cylinder and the key-hub or thekey-hub alone to be rotated, substantttllyas set forth.

4. The esoutcheon cylinder containing spring-drivers and inolosingcylinder I'I I, carrying pins M N, and the inner cylinder being providedwith the key-slot Q, combined with the rod W, having Ward a, therevoluble

